The cheat sheet gathers on one page everything about a key: key signature, scales, modes, degree names, triads and seventh chords, plus reference tables for accidentals, note names and chord symbols.
Pick a key: everything about it is gathered here, to look up while you study or write.
It is the set of sharps or flats written at the start of the staff, which apply to the whole piece. It indicates the key: no accidentals for C major and A minor, one sharp for G major and E minor.
What are the scale degrees called?
Tonic, supertonic, mediant, subdominant, dominant, submediant and leading tone. In the natural minor scale the seventh degree lies a whole step below the tonic and is called the subtonic.
What are parallel keys?
They are two keys with the same tonic and different modes, for example C major and C minor. They do not share a key signature: C minor has three more flats.
Texts and tools by Stefano Corradi, professional musician and developer. Last updated: October 8, 2026.
From theory to practice
With GEN you generate ever-new exercises on the scales you are studying.
